SEA85FA086

NTSB accident investigation · Piper PA-18-150 · Sunnyside, WA · April 7, 1985

Accident · FatalField investigationFinal report
Date
April 7, 1985, 11:14 local (19:14 UTC)
Place
Sunnyside, WA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Unknown
Aircraft
N4379ZPiper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850407011619A
Case key
40038

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerUnknown
Reason for occurrence undeterminedCause
Forced landingDescent - emergency
In flight collision with objectApproach - vfr pattern - final approach
Object - wire,transmissionFactor
Visual lookout - inadequatePilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The acft crashed after colliding with electrical power lines near an open field. Initial impact with the power lines occurred where the wires were routed over a draw between 2 ridges. The acft came to rest inverted between the power lines & the open field. The acft was relatively intact with extensive ground impact damage to the left wing & compression & twisting to the rear fuselage. There was heavy scrape marks on the left main gear. The prop showed no rotational marks or damage. The left fuel cap was off & some fuel was remaining in the rear corner. The right fuel cap was in place. The carb heat control was wedged in the on/hot position. The connecting wires to the starter switch were found corroded at the attach screws, they were partly separated & the case was broken. No preimpact part failure or malfunction was verified.

Aircraft

Registration
N4379Z
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-8701
Airframe hours
2,016
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Henry G. Anderson, Jr.
Airworthiness certificate
Standard, Utility
Last inspection
Annual · December 10, 1984 · 78 hours before
Departed
S40 · Prosser, WA

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
53
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Toxicology
Performed

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 11 knots
Visibility
35 statute miles
Lowest ceiling
10,000 ft overcast
Temperature
64 °F, dew point 21 °F
Altimeter
30.00 inHg
Observed at
YKN, 30 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N4379Z · 1

Matched to the same aircraft by N-number and date.